- A line on a computer terminal at which commands are typed.
- A string of characters that constitute such a command.
(plural command lines)
Also known as the command prompt or the DOS prompt (for Microsoft Windows–based systems) or the shell (for UNIX or Linux based systems). A fundamental user interface (distinct from the graphical user interface) designed to be used by advanced users and system administrators and employed by hackers and crackers to complete exploits.
Software that provides a blank line and cursor on screen, allowing the user to type in instructions for immediate execution. All major operating systems (Windows, Mac, Unix, Linux, etc.) support command lines that programmers and power users can employ to perform file management operations directly and often more efficiently than by using a graphical user interface (GUI). After typing a command, it is executed by pressing the Enter key. Windows Examples There are numerous Windows commands in this encyclopedia, and two examples follow. To do these operations in Windows Explorer or a Windows-based Pkzip utility would take numerous mouse clicks. See Windows commands. Command Operation Performed copy *.html d:\abc Copy HTML files to ABC folder in D drive pkzip xyz *.jpg Compress all JPEG files into the Zip archive XYZ.ZIP. Interactive or Sequential Commands can be executed one at a time by typing the command and pressing Enter. They can also be executed as a group, in which case the commands are typed into a "batch" or "script" file. The file name is typed on the command line, and pressing Enter causes each command to be executed in order. See batch file abc's, cmd abc's, command processor and PowerShell.